
However, the article still maintains, "But the volcanism was only a trigger. All the greenhouse gas emitted by the eruptions and the ensuing cooking of organic matter would still not have been enough to cause the changes in climate and ocean chemistry..." It just melted methane in the oceans and that caused global warming.
I don't know...the sun got hotter seems like a much more simple explanation to me. Also, recall that Mars is getting warmer too. That could be the sun as well. I read that one theory for Mars is that temperature variations are causing the dust storms which in turn cause temperature changes. Seems circular to me...which came first?
Volcanoes triggered ancient warming event





